The protagonist, Soichiro Hibiki, is a bartender at a bar in Shonan. He is usually cool and mysterious, but he has a secret he doesn't want people to know: he is a "secret fudanshi otaku," and he is always trying to make the customers who come to the bar for drinks into his favorite coupling, secretly fantasizing about them and worshipping their precious relationships.
(Source: Crunchyroll)

Original manga